3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = null; $name = 'this'; var_dump(array($$name)); var_dump(array(isset($$name) ? $$name : $$name));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.40.0080.00818.99
8.3.30.0070.00718.89
8.3.20.0040.00420.12
8.3.10.0040.00421.95
8.3.00.0000.00722.44
8.2.170.0000.01422.96
8.2.160.0080.00619.25
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00826.16
8.2.120.0050.00319.24
8.2.110.0070.00420.39
8.2.100.0110.00019.70
8.2.90.0040.00419.22
8.2.80.0040.00418.03
8.2.70.0040.00417.50
8.2.60.0000.00817.80
8.2.50.0000.00818.07
8.2.40.0070.00718.22
8.2.30.0000.00717.99
8.2.20.0040.00417.58
8.2.10.0000.00817.72
8.2.00.0040.00417.61
8.1.270.0000.00822.14
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0050.00523.80
8.1.230.0000.01018.97
8.1.220.0000.00917.79
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0000.00817.18
8.1.180.0040.00418.57
8.1.170.0000.00818.70
8.1.160.0060.00322.18
8.1.150.0040.00418.63
8.1.140.0040.00417.36
8.1.130.0030.00617.82
8.1.120.0030.00417.45
8.1.110.0000.00817.43
8.1.100.0040.00417.44
8.1.90.0080.00017.41
8.1.80.0070.00017.53
8.1.70.0000.00817.43
8.1.60.0120.00017.62
8.1.50.0040.00417.55
8.1.40.0070.00017.51
8.1.30.0000.00717.54
8.1.20.0000.00817.63
8.1.10.0030.00617.52
8.1.00.0040.00417.48
8.0.300.0070.00018.77
8.0.290.0000.00717.18
8.0.280.0070.00018.45
8.0.270.0000.00817.22
8.0.260.0000.00716.79
8.0.250.0000.00716.98
8.0.240.0000.00716.99
8.0.230.0080.00016.92
8.0.220.0000.00716.97
8.0.210.0070.00016.90
8.0.200.0000.00817.00
8.0.190.0030.00316.91
8.0.180.0050.00316.91
8.0.170.0040.00416.95
8.0.160.0030.00616.85
8.0.150.0000.00716.93
8.0.140.0000.00716.88
8.0.130.0030.00313.38
8.0.120.0040.00416.86
8.0.110.0000.00716.84
8.0.100.0040.00416.82
8.0.90.0000.00717.02
8.0.80.0060.01616.97
8.0.70.0000.00716.82
8.0.60.0000.00716.99
8.0.50.0040.00417.05
8.0.30.0140.00517.03
8.0.20.0130.00517.40
8.0.10.0070.00017.06
8.0.00.0120.01016.81
7.4.330.0020.00315.00
7.4.320.0000.00716.52
7.4.300.0030.00316.50
7.4.290.0000.00716.62
7.4.280.0030.00316.60
7.4.270.0070.00016.50
7.4.260.0030.00316.39
7.4.250.0040.00416.62
7.4.240.0000.00716.64
7.4.230.0000.00716.60
7.4.220.0110.00816.45
7.4.210.0050.01316.57
7.4.200.0070.00016.66
7.4.190.0060.00316.46
7.4.160.0060.01016.56
7.4.150.0090.00917.40
7.4.140.0120.00617.86
7.4.130.0130.00616.59
7.4.120.0110.00716.50
7.4.110.0070.01116.57
7.4.100.0160.00316.54
7.4.90.0000.02016.49
7.4.80.0160.00319.39
7.4.70.0100.00616.35
7.4.60.0130.00616.69
7.4.50.0000.00816.64
7.4.40.0030.01222.77
7.4.30.0090.00616.52
7.4.10.0030.01314.88
7.4.00.0080.01015.10
7.3.330.0000.00613.08
7.3.320.0000.00513.26
7.3.310.0040.00416.38
7.3.300.0060.00016.31
7.3.290.0050.00816.25
7.3.280.0110.00616.34
7.3.270.0070.01117.40
7.3.260.0060.01116.58
7.3.250.0100.00716.44
7.3.240.0050.01116.66
7.3.230.0090.00916.40
7.3.210.0000.01816.51
7.3.200.0030.01719.39
7.3.190.0100.01116.29
7.3.180.0080.00816.37
7.3.170.0090.00616.30
7.3.160.0120.00316.38
7.3.130.0040.01614.87
7.3.120.0160.00314.88
7.3.110.0060.01114.92
7.3.100.0060.00814.74
7.3.90.0060.00714.97
7.3.80.0020.00814.88
7.3.70.0020.01314.75
7.3.60.0060.00514.75
7.3.50.0120.00414.69
7.3.40.0070.00614.77
7.3.30.0040.00614.85
7.3.20.0100.00316.79
7.3.10.0070.00716.55
7.3.00.0040.01016.60
7.2.330.0110.00616.45
7.2.320.0150.00816.50
7.2.310.0060.01316.62
7.2.300.0060.01116.64
7.2.290.0040.01216.48
7.2.260.0090.00614.91
7.2.250.0120.00314.96
7.2.240.0070.01015.05
7.2.230.0090.00714.90
7.2.220.0100.00214.71
7.2.210.0090.00414.90
7.2.200.0060.00915.00
7.2.190.0090.00614.84
7.2.180.0050.00915.05
7.2.170.0080.00814.88
7.2.160.0080.00314.92
7.2.150.0090.00916.97
7.2.140.0050.00716.67
7.2.130.0010.01116.69
7.2.120.0070.00716.78
7.2.110.0050.01116.76
7.2.100.0100.00416.79
7.2.90.0030.01216.76
7.2.80.0090.00816.72
7.2.70.0070.00917.00
7.2.60.0040.01016.79
7.2.50.0030.00716.88
7.2.40.0040.00717.00
7.2.30.0050.00616.97
7.2.20.0040.01016.70
7.2.10.0070.00417.10
7.2.00.0050.01016.89
7.1.330.0090.00415.65
7.1.320.0050.01215.91
7.1.310.0020.01215.77
7.1.300.0060.01015.63
7.1.290.0070.00815.69
7.1.280.0020.01015.78
7.1.270.0050.00815.55
7.1.260.0040.00715.86
7.1.250.0030.01215.77
7.1.240.0000.01615.73
7.1.230.0000.01215.47
7.1.220.0080.00415.58
7.1.210.0040.00715.78
7.1.200.0070.00515.75
7.1.190.0040.00715.79
7.1.180.0050.00515.73
7.1.170.0060.00615.50
7.1.160.0100.00315.41
7.1.150.0000.01315.72
7.1.140.0030.00915.59
7.1.130.0070.00715.79
7.1.120.0060.00315.75
7.1.110.0030.01315.91
7.1.100.0070.00715.81
7.1.90.0100.01015.75
7.1.80.0000.01515.74
7.1.70.0180.00416.27
7.1.60.0020.00916.31
7.1.50.0070.00916.16
7.1.40.0090.00315.66
7.1.30.0050.00515.64
7.1.20.0070.00715.45
7.1.10.0000.01715.68
7.1.00.0050.01819.07
7.0.330.0070.00715.50
7.0.320.0060.00315.31
7.0.310.0070.00715.47
7.0.300.0070.00715.53
7.0.290.0070.00415.36
7.0.280.0030.00915.32
7.0.270.0030.01015.49
7.0.260.0040.00815.57
7.0.250.0000.00815.10
7.0.240.0060.00915.35
7.0.230.0070.01315.28
7.0.220.0110.00415.39
7.0.210.0000.01615.36
7.0.200.0020.01416.14
7.0.190.0060.00615.48
7.0.180.0000.01215.36
7.0.170.0040.00815.25
7.0.160.0070.00315.33
7.0.150.0030.01015.51
7.0.140.0070.03818.78
7.0.130.0070.00715.50
7.0.120.0100.00315.25
7.0.110.0060.00315.45
7.0.100.0040.01115.42
7.0.90.0110.00415.30
7.0.80.0040.00415.43
7.0.70.0030.01015.41
7.0.60.0040.03617.67
7.0.50.0040.03416.57
7.0.40.0050.02516.87
7.0.30.0150.03616.73
7.0.20.0100.02716.68
7.0.10.0070.04616.68
7.0.00.0060.02216.74
5.6.400.0030.00614.27
5.6.390.0060.00914.32
5.6.380.0110.00414.09
5.6.370.0070.00714.11
5.6.360.0040.01214.32
5.6.350.0090.00314.43
5.6.340.0140.00014.10
5.6.330.0030.00614.65
5.6.320.0070.00714.39
5.6.310.0070.00714.61
5.6.300.0060.00614.07
5.6.290.0040.00414.67
5.6.280.0070.03617.46
5.6.270.0110.00414.26
5.6.260.0030.00614.05
5.6.250.0070.00714.49
5.6.240.0100.00714.23
5.6.230.0030.00914.07
5.6.220.0030.00714.51
5.6.210.0050.04717.45
5.6.200.0120.04216.15
5.6.190.0030.05017.35
5.6.180.0100.02417.46
5.6.170.0130.03017.29
5.6.160.0050.04117.38
5.6.150.0100.04216.19
5.6.140.0050.03516.31
5.6.130.0120.03116.09
5.6.120.0060.02417.70
5.6.110.0020.05217.73
5.6.100.0050.04817.57
5.6.90.0100.04617.57
5.6.80.0060.03317.30
5.6.70.0040.00813.88
5.6.60.0100.00314.18
5.6.50.0110.00314.50
5.6.40.0040.00814.05
5.6.30.0050.00514.05
5.6.20.0030.00714.21
5.6.10.0070.00314.45
5.6.00.0060.00314.10
5.5.380.0040.00814.36
5.5.370.0000.01413.83
5.5.360.0000.00813.99
5.5.350.2030.02317.22
5.5.340.0080.03515.97
5.5.330.0100.04417.40
5.5.320.0120.03517.27
5.5.310.0200.04617.29
5.5.300.0050.02416.13
5.5.290.0050.04315.86
5.5.280.0030.03217.45
5.5.270.0080.04317.46
5.5.260.0080.04817.28
5.5.250.0110.04517.48
5.5.240.0000.02317.21
5.5.230.0060.00914.14
5.5.220.0000.01314.01
5.5.210.0140.00013.92
5.5.200.0070.00713.86
5.5.190.0030.00714.21
5.5.180.0110.00314.30
5.5.170.0040.01114.27
5.5.160.0080.00614.10
5.5.150.0000.01014.10
5.5.140.0060.00914.01
5.5.130.0000.01414.07
5.5.120.0030.00914.07
5.5.110.0060.00914.14
5.5.100.0040.00414.22
5.5.90.0060.00614.32
5.5.80.0030.01013.96
5.5.70.0000.00813.91
5.5.60.0040.01113.99
5.5.50.0000.01414.25
5.5.40.0060.00313.89
5.5.30.0030.01313.82
5.5.20.0120.00313.98
5.5.10.0090.00614.07
5.5.00.0090.00614.04
5.4.450.0480.01815.47
5.4.440.0270.02515.28
5.4.430.0570.02115.26
5.4.420.0240.01915.32
5.4.410.0560.01815.27
5.4.400.0570.03115.28
5.4.390.0290.02115.16
5.4.380.0150.03515.01
5.4.370.0200.02815.07
5.4.360.0210.04115.06
5.4.350.0180.04415.06
5.4.340.0200.03215.00
5.4.330.0030.00711.43
5.4.320.0090.01911.94
5.4.310.0040.02511.94
5.4.300.0070.02811.94
5.4.290.0060.02711.94
5.4.280.0060.02311.89
5.4.270.0100.01811.89
5.4.260.0020.03215.04
5.4.250.0050.03315.09
5.4.240.0030.03215.22
5.4.230.0080.02715.18
5.4.220.0050.04415.10
5.4.210.0090.02615.05
5.4.200.0130.03015.13
5.4.190.0020.03415.16
5.4.180.0080.02615.06
5.4.170.0120.03315.17
5.4.160.0180.02715.22
5.4.150.0100.03515.13
5.4.140.0030.04313.85
5.4.130.0050.03813.92
5.4.120.0030.03113.86
5.4.110.0030.03913.89
5.4.100.0090.02513.96
5.4.90.0050.02713.83
5.4.80.0100.02113.85
5.4.70.0050.02713.85
5.4.60.0050.02713.98
5.4.50.0110.02313.91
5.4.40.0060.02613.94
5.4.30.0120.02013.99
5.4.20.0080.02313.91
5.4.10.0030.02913.84
5.4.00.0080.02513.63
5.3.290.0070.02312.12
5.3.280.0020.03913.06
5.3.270.0100.02512.95
5.3.260.0020.03613.06
5.3.250.0090.03813.01
5.3.240.0060.03013.02
5.3.230.0080.02713.03
5.3.220.0050.03113.04
5.3.210.0070.02812.94
5.3.200.0070.03113.00
5.3.190.0030.02812.94
5.3.180.0050.04112.93
5.3.170.0060.03013.00
5.3.160.0030.02713.00
5.3.150.0020.03312.91
5.3.140.0000.03412.91
5.3.130.0120.02212.84
5.3.120.0050.04012.92
5.3.110.0070.02912.88
5.3.100.0030.03712.65
5.3.90.0030.03312.72
5.3.80.0080.02412.66
5.3.70.0070.03812.65
5.3.60.0100.03512.56
5.3.50.0050.03012.69
5.3.40.0030.03712.54
5.3.30.0080.02512.74
5.3.20.0080.02512.57
5.3.10.0120.02812.50
5.3.00.0080.03512.47
5.2.170.0100.03711.03
5.2.160.0070.04011.07
5.2.150.0100.04711.16
5.2.140.0100.04311.16
5.2.130.0130.04011.00
5.2.120.0130.04011.11
5.2.110.0200.04311.02
5.2.100.0130.04711.10
5.2.90.0070.04711.13
5.2.80.0000.04311.11
5.2.70.0100.03711.11
5.2.60.0000.04311.20
5.2.50.0100.03711.04
5.2.40.0170.02711.10
5.2.30.0030.04010.98
5.2.20.0070.04010.86
5.2.10.0030.04010.76
5.2.00.0030.04010.64
5.1.60.0030.0379.88
5.1.50.0100.04010.22
5.1.40.0000.0379.82
5.1.30.0100.02710.39
5.1.20.0070.03310.43
5.1.10.0030.0379.91
5.1.00.0030.03710.02
5.0.50.0000.0308.60
5.0.40.0100.0208.25
5.0.30.0030.0438.41
5.0.20.0000.0308.14
5.0.10.0030.0278.11
5.0.00.0030.0438.30
4.4.90.0030.0207.14
4.4.80.0030.0207.14
4.4.70.0000.0237.14
4.4.60.0100.0137.14
4.4.50.0070.0177.14
4.4.40.0000.0477.14
4.4.30.0100.0137.13
4.4.20.0000.0277.03
4.4.10.0070.0176.98
4.4.00.0030.0306.98
4.3.110.0030.0206.98
4.3.100.0030.0206.98
4.3.90.0030.0206.98
4.3.80.0070.0336.98
4.3.70.0000.0236.98
4.3.60.0030.0206.98
4.3.50.0100.0136.98
4.3.40.0000.0336.98
4.3.30.0030.0206.98
4.3.20.0030.0206.98
4.3.10.0000.0236.98
4.3.00.0130.01313.17

preferences:
49.43 ms | 400 KiB | 5 Q